/**
 * Copyright (c) 2020 Baidu, Inc. All Rights Reserved.
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.baidu.agile.agent.common.http;

import com.baidu.agile.agent.AgentException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;

public class HttpDownloader {

    private static final Logger LOGGER = LoggerFactory.getLogger(HttpDownloader.class);

    String localFile;

    String remoteUrl;

    public HttpDownloader from(String remoteUrl) {
        this.remoteUrl = remoteUrl;
        return this;
    }

    public HttpDownloader to(String localFile) {
        this.localFile = localFile;
        return this;
    }

    public void download() {
        File file = null;
        try {
            file = new HttpClient(remoteUrl).outFile(localFile).timeout(60000)
                    .uploadLog(true)
                    .get(File.class);
        } catch (Exception e) {
            LOGGER.error("Http download exception.", e);
            throw new AgentException("Http download exception.", e);
        }
        if (null == file || !file.exists()) {
            throw new AgentException("Http download file fail!");
        }
    }
}
